DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.2

plala.or.jp · 60.43.62.5:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. Peer certificate subjectAltName did not match expected name `plala.or.jp'

Certificate verification failed

Subject
C=JP ST=Tokyo L=Chiyoda-Ku O=NTT DOCOMO, INC. CN=*.plala.or.jp
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-02-16T00:00:00+00:00
Expires
2027-03-12T23:59:59+00:00
Days remaining
143
Serial (hex)
0C4E26518F89859308CEC5B6DA2E644F
Signature
RSA-SHA384
Public key
RSA 3072

Subject alternative names (SAN)

DNS:*.plala.or.jp

SHA-256 fingerprint

EB:10:71:4A:3B:57:A9:A0:30:B2:BA:CA:9C:E7:EB:76:31:6B:F9:BF:7A:1D:51:20:25:23:32:DA:AB:1D:BF:12
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
4B:4D:29:8A:76:49:B1:62:36:9D:38:40:3A:85:A0:AE:48:D0:14:F8
subjectAltName
DNS:*.plala.or.jp
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Feb 16 04:40:54.878 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:DE:7A:0F:79:46:5C:01:37:91:49:CE: 97:1C:4A:31:C4:5F:DA:6A:69:3F:2B:19:41:A7:71:A1: 64:06:06:0C:F3:02:21:00:86:69:D9:EB:FE:6D:92:D4: B9:69:A7:89:0F:B6:A9:21:0C:1D:C4:13:53:79:02:69: D2:58:0C:2D:5D:76:2A:50 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Feb 16 04:40:54.870 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:91:75:E5:85:1C:56:B7:08:3D:75:6E: 97:80:F4:53:1A:11:05:F1:00:17:47:B1:DB:A4:0D:6F: 85:1D:F1:9D:DC:02:20:1F:7A:53:0C:E4:10:BF:FF:05: B3:44:4A:DD:F2:35:34:82:17:9D:3F:8F:96:92:0B:78: 2B:A1:85:1F:84:B6:54 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Feb 16 04:40:55.062 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:01:D3:AF:B8:10:C1:D4:91:E1:40:24:B9: 58:B6:3D:19:0E:4B:24:43:9D:E1:4F:4B:89:0D:D9:9D: 25:BD:5F:20:02:21:00:EC:03:04:2D:FF:75:A3:77:3A: 48:E0:C6:DB:A7:FD:17:02:62:B6:7C:3D:96:E4:AB:4D: 35:14:07:26:BB:18:02
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-20T10:49:39+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2021-03-30T00:00:00+00:00
Expires
2031-03-29T23:59:59+00:00
Days remaining
1621
Serial (hex)
0CF5BD062B5602F47AB8502C23CCF066
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:02:5F:9F:C6:5F:DF:C9:5B:3C:A8:CC:78:67:B9:A5:87:B5:27:79:73:95:79:17:46:3F:C8:13:D0:B6:25:A9
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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